hi,

Iam going through a big problem from last 1 month as my mondeo broke down and engine was seized, then i had to replace the engine, my mechanic took all the other stuff from my old engine like water pump fuel injector flywheel etc and put in the new engine. NOW problem is only one fuel injector is spraying where ever you put it and rest 3 not. so he told me my 3 fuel injectors are damaged so i bought 3 used injectors and when we tried to put them back only 2 from those sprayed one wasnt, but afta 5 minz when we tried to start the car again none of the new injectors sprayingas 5 minz before but the one old one which was working fine still working fine as wherever u screw it.

as now i have a doubt that my old injectors are also fine is something else??? but why 3 injectors are not spraying at all?? and old one is fine as u screw it anywhere??

Have you already try to connect your car to a diagnostic machine test to set your ECU to those injectors? You have a code in the injector and you have to put that code in the diagnostic machine test for the ECU recognize the injectors

i think he has only one of the injectors at the good coded cylinder and the 3 others are inverted
it's a old school mecaniker ?

Yes, you have to code the injectors for each cylinder in the Diagnostic test machine